Solid powder cosmetic

Abstract

To provide a solid powder cosmetic with consideration for impact on the human body and the environment, exhibiting a soft and creamy texture.SOLUTION: A dry-molded solid powder cosmetic comprising: (A) 10 mass% or more to 50 mass% or less of mica having a loose bulk density of 0.11 g / ml or more and less than 0.21 g / ml, (B) 3 mass% or more to 15 mass% or less of a liquid oil having a viscosity of 10 mPa s or more and 150 mPa s or less, and (C) 40 mass% or less of a metal soap powder, the cosmetic being substantially free of talc and substantially free of microplastic beads.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a solid powder cosmetic, and more particularly to a solid powder cosmetic that is safe for the human body and environmentally friendly, and has a soft and creamy feel. [Background technology]

[0002] Solid powder cosmetics have been widely used as one of the cosmetic formulations. Solid powder cosmetics generally contain a large amount of talc as a base material from the viewpoint of improving moldability and impact resistance.

[0003] In recent years, concerns have arisen that talc may contain trace amounts of asbestos. Because asbestos may have adverse effects on the human body, there is a demand for talc-free cosmetics. Powdered cosmetics generally contain platy powders such as mica, sericite, and synthetic phlogopite as alternatives to talc. However, due to their particle shape and physical properties, there have been issues with product quality, such as reduced impact resistance and increased dusting. Furthermore, from an environmental perspective, the use of silicone and microplastic beads has also raised concerns.

[0004] A powdery solid cosmetic preparation is known that contains mica (A) having an average particle size of 15 μm or less and mica (B) having an average particle size of 10 μm or more, in which the difference between the average particle size of the mica (A) and the average particle size of the mica (B) is 5 μm or more, and that does not contain talc (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication WO2022-085589 Summary of the Invention [Problem to be solved by the invention]

[0006] In cosmetics, consideration of the effects on the human body and the environment is becoming increasingly important. In this context, the invention disclosed in Patent Document 1 contains silicone and microplastic beads (nylon, urethane), and therefore cannot be said to be sufficiently environmentally friendly.

[0007] Cosmetics containing silicone or microplastic beads are soft, easy to remove, and produce molded products that spread well on the skin. However, a drawback is that high concentrations of these ingredients can lead to poor moldability.

[0008] A method called wet filling can be used to obtain a molded product that does not contain talc and contains a large amount of spherical powder. However, the production of wet-molded cosmetics requires complicated processes such as slurrying using a solvent, filling, and drying, and is also expensive. [Means for solving the problem]

[0009] In view of the above circumstances, the present inventors have conducted extensive research and have found that by blending mica of a certain bulk specific gravity and low viscosity oil in a specific ratio, it is possible to obtain a dry-molded cosmetic with good moldability without blending talc, and a soft, creamy texture similar to that of a wet-type cosmetic without blending microplastic beads, thereby completing the present invention.

[0010] That is, according to one embodiment, the present invention relates to a dry-molded solid powder cosmetic comprising: (A) 10% by mass or more and 50% by mass or less of mica having a loose bulk gravity of 0.11 g / ml or more and less than 0.21 g / ml; (B) 3% by mass or more and 15% by mass or less of liquid oil having a viscosity of 10 mPa·s or more and 150 mPa·s or less; and (C) 40% by mass or less of metal soap powder, wherein the viscosity of the liquid oil phase containing component (B) is 10 mPa·s or more and 150 mPa·s or less, and the cosmetic is substantially free of talc and substantially free of plastic microbeads. Note that, here, the "liquid oil phase" refers to a phase consisting of liquid oil that contains the liquid oil of component (B) and may optionally contain a liquid oil other than component (B).

[0011] The solid powder cosmetic preferably contains 0.1% by mass or more and 40% by mass or less of the component (C).

[0012] The solid powder cosmetic preferably further contains (D) a paste oil in an amount of 1% by mass or more and 7.5% by mass or less.

[0013] It is preferable that the solid powder cosmetic further contains (D) a paste oil in an amount of 0% by mass or more and 7.5% by mass or less, the total mass of components (B) and (D) is 15% by mass or less, and the blending amount of component (D) is 50% by mass or less of the blending amount of component (B).

[0014] It is preferable that the solid powder cosmetic contains substantially no powder containing silicone as a main component and substantially no silicone oil. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide a solid powder cosmetic that does not contain talc or microplastic beads, has excellent impact resistance, good color development, and has a soft feel. DETAILED DESCRIPTION OF THE INVENTION

[0016] According to one embodiment, the present invention relates to a dry-molded solid powder cosmetic. The solid powder cosmetic according to this embodiment includes at least the following: (A) A mica having a loose bulk density of 0.11 g / ml or more and less than 0.21 g / ml is 10% by mass or more and 50% by mass or less (B) 3% by mass or more and 15% by mass or less of a liquid oil having a viscosity of 10 mPa·s or more and 150 mPa·s or less (C) Metal soap powder 40% by mass or less In the solid powder cosmetic according to this embodiment, the viscosity of the liquid oil phase containing the component (B) is 10 mPa·s or more and 150 mPa·s or less, and the solid powder cosmetic is substantially free of talc and substantially free of plastic microbeads.

[0017] As used herein, a solid powder cosmetic refers to a cosmetic produced by press molding, comprising a powder as the main ingredient and an oil phase that acts as a binder or adhesive for the powder. The solid powder cosmetic according to this embodiment is a dry-molded solid powder cosmetic. A dry-molded solid powder cosmetic refers to a cosmetic produced by filling a bulk into a mold and compressing it using a press mold. A wet-molded solid powder cosmetic refers to a cosmetic produced by adding a solvent such as water to the bulk to form a slurry, filling the mold, and then pressing the mixture to dry and evaporate the solvent, characterized by the use of a volatile solvent in the molding process. The type and amount of solvent used are optional. Note that water is also included as a volatile solvent. Hereinafter, in this specification, the "dry-molded solid powder cosmetic" according to the present invention may be referred to as a "solid powder cosmetic" or simply as a "cosmetic."

[0018] The solid powder cosmetic according to this embodiment is substantially free of talc and substantially free of microplastic beads. Talc is a magnesium silicate hydrate (MgSiO 10(OH)2) or ores containing it as a primary component. Talc also includes artificially synthesized synthetic talc. "Substantially talc-free" refers to a talc content of less than 0.1% by mass, based on the total mass of the solid powder cosmetic product (100%). This means that talc is not intentionally mixed in, but is present at a level that is unavoidable. "Microplastic beads (MPB)" is narrowly defined as "synthetic, water-insoluble, solid plastic particles less than 5 mm in size that are intentionally incorporated into personal care products for the purposes of exfoliation and cleansing." In this specification, "MPB" refers not only to MPB in the narrow sense, but also to solid, organic synthetic polymer spherical particles less than 5 mm in size that have traditionally been incorporated into cosmetics to improve their usability, such as powders and fibers of nylon, acrylate esters, polyethylene, polystyrene, polyethylene terephthalate, polyurethane, organopolysiloxane, and partially crosslinked organopolysiloxane. Naturally occurring polymers such as cellulose and inorganic polymers such as silica are not considered MPB. "Substantially free of plastic microbeads" means that the MPB content is less than 0.1% by mass when the total mass of the solid powder cosmetic is taken as 100%, and that MPB is not intentionally mixed in, but is present at a level that may be unavoidably mixed in.

[0019] The essential components (A) and (B) that constitute the solid powder cosmetic according to this embodiment will be described below.

[0020] (A) Mica Component (A) is mica with a loose bulk density of 0.11 g / ml or more and less than 0.21 g / ml. Mica, also known as mica, is a mineral-derived component primarily composed of hydrous potassium aluminum silicate. Component (A) may be natural or synthetic mica. Furthermore, these micas may also be surface-treated. Examples of surface treatment agents include, but are not limited to, dimethicone, methicone, N-stearoyl-L-glutamate disodium, cocoyl glutamate disodium, lauroyl lysine, sodium dilauroyl glutamate lysine, sodium lauroyl aspartate, aluminum dimyristate, magnesium stearate, silica, triethoxycaprylylsilane, isopropyl titanium triisostearate, and hydrogenated lecithin. Silicone is permitted as a surface treatment agent because it does not fall under the category of "silicone-based powder" or "silicone oil." In addition, titanium mica, which is mica coated with titanium oxide, and iron oxide mica, which is mica coated with iron oxide, which are used as pearl materials, are not considered to be component (A) in the present invention.

[0021] The mica of component (A) has a loose bulk density of 0.11 g / ml or more and less than 0.21 g / ml. The loose bulk density is a value measured in accordance with "Japanese Industrial Standards JIS K5101-12-1, Pigment Testing Methods, Part 12: Apparent Density or Apparent Specific Volume, Section 1: Static Method." Hereinafter, "bulk density" may be abbreviated, but all bulk gravity in this specification refers to a value measured in accordance with JIS K5101-12-1. If the bulk density is less than 0.11 g / ml, the cosmetic composition's drop strength will decrease, it will be subject to powdering, and it will not be soft enough. If the bulk density is 0.21 g / ml or more, powdering will occur. Preferably, the bulk density is 0.12 g / ml or more and less than 0.20 g / ml. The particle shape and particle size of the mica of component (A) are not particularly limited.

[0022] Component (A) is contained in an amount of 10% by mass or more and 50% by mass or less, assuming the total mass of the solid powder cosmetic to be 100%. If the content of component (A) is less than 10% by mass, the cosmetic will not be soft enough and will not have sufficient color development. If the content of component (A) is more than 50% by mass, the cosmetic will have reduced drop strength, will be prone to powdering, and will also have reduced color development. The content of component (A) is preferably 15% by mass or more and 45% by mass or less, and more preferably 25% by mass or more and 40% by mass or less.

[0023] (B) Low viscosity liquid oil Component (B) is a liquid oil with a viscosity of 10 mPa·s or more and 150 mPa·s or less. Component (B) imparts a creamy feel to the cosmetic when mixed with component (A), and its viscosity contributes to high color development.

[0024] Here, the viscosity of the liquid oil refers to the viscosity measured using a Brookfield viscometer under the following measurement conditions: measurement temperature 25°C, using an M1 rotor, rotation speed 30 rpm (revolutions per minute), and rotation time 60 seconds. When the liquid oil consists of a single type of liquid oil, the viscosity may be the viscosity of the liquid oil itself. Furthermore, when the liquid oil phase consists of a mixture of two or more different types of liquid oil, the viscosity is the viscosity measured for the mixture.

[0025] Examples of the liquid oil of component (B) include, but are not limited to, liquid fats and oils, hydrocarbon oils, higher alcohols, synthetic ester oils, and silicone oils. Specific examples of liquid fats and oils include, but are not limited to, apricot kernel oil, olive fruit oil, kaya seed oil, sesame oil, rice germ oil, safflower oil, tea seed oil, corn germ oil, jojoba oil, and macadamia seed oil. Specific examples of hydrocarbon oils include, but are not limited to, liquid paraffin and squalane. Specific examples of higher alcohols include, but are not limited to, linear alcohols (e.g., oleyl alcohol, etc.) and branched alcohols (e.g., hexyldecanol, isostearyl alcohol, octyldodecanol, decyltetradecanol, etc.). Specific examples of synthetic ester oils include isocetyl myristate, octyldodecyl myristate, isopropyl palmitate, ethylhexyl palmitate, isocetyl palmitate, ethyl isostearate, isopropyl isostearate, isobutyl isostearate, hexyldecyl isostearate, isostearyl isostearate, bisethoxydiglycol succinate, diethylhexyl succinate, isostearyl neopentanoate, cetyl ethylhexanoate, and ethylhexyl Examples of silicone oils include, but are not limited to, hexyldecyl isononate, neopentyl glycol diethylhexanoate, triethylhexanoin, trimethylolpropane triethylhexanoate, isononyl isononanoate, isodecyl isononanoate, tricyclodecanemethyl isononanoate, isotridecyl isononanoate, neopentyl glycol diisononanoate, ethylhexyl hydroxystearate, octyldodecyl stearoyloxystearate, and diisopropyl dilinoleate. Specific examples of silicone oils include, but are not limited to, one or more selected from the group consisting of silicone compounds such as dimethicone, methicone, diphenyldimethicone, and trimethylsiloxysilicate. Liquid oils can be blended depending on the desired application feel and finish of the cosmetic product. However, from the perspectives of impact resistance, softness, color development, and environmental friendliness, liquid oils selected from hydrocarbon oils, ester oils, and higher alcohols are preferred.

[0026] Component (B) is contained in an amount of 3% by mass or more and 15% by mass or less, assuming the total mass of the solid powder cosmetic to be 100%. If the content of component (B) is less than 3% by mass, the component that functions as a binder for the solid powder cosmetic will be insufficient, resulting in reduced impact resistance and reduced color development due to the coloring component not being wetted. Powdering also occurs. If the content of component (B) exceeds 15% by mass, the pressed surface will become hard and the softness of the cosmetic will decrease. The content of component (B) is preferably 4% by mass or more and 12% by mass or less, and more preferably 5% by mass or more and 10% by mass or less. If multiple liquid oils corresponding to component (B) are contained, it is preferable that the total mass of the multiple oils be within the above range.

[0027] The liquid oil phase contained in the solid powder cosmetic may consist solely of the liquid oil of component (B), or may be a mixture of the liquid oil of component (B) and a liquid oil that does not meet the viscosity requirements of component (B). That is, a liquid oil other than component (B) may be included as an optional component. In such cases, the viscosity of the mixture of component (B) and the liquid oil other than component (B) must satisfy the condition of 10 mPa·s or more and 150 mPa·s or less. Furthermore, when a liquid oil other than component (B) is included, the content of component (B) is preferably 40% by mass or more, more preferably 60% by mass or more, and even more preferably 80% by mass or more, assuming the total mass of the liquid oil phase to be 100%. Types of liquid oils other than component (B) that may be optionally included will be described below.

[0028] (C) Metal soap powder The metal soap powder of component (C) is an optional component and may be any metal soap powder. However, when component (C) metal soap powder is included, its content is 40% by mass or less. By including the metal soap powder in the solid powder cosmetic, impact resistance can be further improved. Examples of metal soap powders include, but are not limited to, one or more selected from the group consisting of salts of any combination of medium- or long-chain saturated fatty acids, such as lauric acid, myristic acid, palmitic acid, and stearic acid, and metals, such as lithium, aluminum, magnesium, calcium, barium, and zinc. In some cases, a larger carbon number may be preferable because it is more effective in improving impact resistance.

[0029] When component (C) is included, it is preferable that component (C) be included in an amount of 0.1% by mass or more and 40% by mass or less, assuming the total mass of the solid powder cosmetic to be 100%. If the content of component (C) is more than 40% by mass, the pressed surface becomes hard, softness decreases, and color development also decreases. Furthermore, if component (C) is not included, moldability may deteriorate, impact resistance may decrease, and scattering may occur more easily. From the viewpoint of these properties, it is preferable to include 0.1% by mass or more of component (C). The content of component (C) is more preferably 0.5% by mass or more and 20% by mass or less, and even more preferably 2% by mass or more and 12% by mass or less.

[0030] (D) Paste oil The paste oil is an optional component and is a semi-solid oil. A semi-solid state refers to a state in which the oil has the physical properties of both a liquid and a solid, has no fluidity at room temperature (25°C), and can be freely deformed by external force. Component (D) can prevent scattering in the solid powder cosmetic according to this embodiment. Examples of such paste oils include, but are not limited to, dipentaerythrityl fatty acid esters such as cetyl lactate and dipentaerythrityl hexa(hydroxystearate / stearate / rosinate), dilinoleic acid diesters such as phytosteryl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, lauroyl glutamic acid diesters such as di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate, caprylic / capric / myristic / stearic acid triglyceride, macadamia nut oil fatty acid phytosteryl, phytosteryl oleate, cholesteryl hydroxystearate, phytosterol amino acids, hydrogenated castor oil stearate, shea butter, cholesteryl hydroxystearate, cetyl palmitate, and diglyceryl adipate mixed fatty acid esters. These may be used alone or in combination of two or more. In addition, component (D) does not fall under the category of "liquid oil" in component (B).

[0031] When component (D) is contained, the content of component (D) is preferably 7.5% by mass or less, assuming the total mass of the solid powder cosmetic to be 100%. If the content of component (D) is more than 7.5% by mass, color development may be reduced. The content of component (D) is more preferably 1% by mass or more and 5% by mass or less. If the content of component (D) is 1% by mass or more, hardening of the pressed surface can be prevented, resulting in a soft cosmetic. The content of component (D) is even more preferably 2% by mass or more and 3% by mass or less. Within this range, a cosmetic with an excellent balance of color development and softness can be obtained.

[0032] Furthermore, it is preferable that the total mass of component (D) and component (B) [(B) + (D)] is 15% by mass or less, assuming the total mass of the solid powder cosmetic to be 100%. This is because it prevents the pressed surface from hardening and allows for a soft cosmetic. It is also preferable that component (D) is included so that the mass ratio to component B [(B) / (D)] is 1 or more, preferably 1.5 or more. Note that, since component (D) is an optional component, the mass % of component (D) can be zero. If (B) / (D) is less than 1, moldability may be impaired and impact resistance may decrease. Furthermore, there is a risk of increased dusting and reduced color development.

[0033] (E) Coloring component The solid powder cosmetic may further contain a coloring component as an optional component. The coloring component may generally be a powder component, and may be a powder commonly used for the purpose of coloring cosmetics. Examples of coloring components include white inorganic pigments such as titanium oxide, zinc oxide, cerium oxide, and barium sulfate; colored inorganic pigments such as iron oxide, carbon black, chromium oxide, chromium hydroxide, Prussian blue, and ultramarine; titanium dioxide-coated mica, titanium dioxide-coated bismuth oxychloride, iron oxide-coated mica titanium, iron oxide mica, Prussian blue-treated mica titanium, carmine-treated mica titanium, bismuth oxychloride, and glitter powders such as fish scale foil; organic pigment powders such as Red No. 201, Red No. 202, Red No. 205, Red No. 226, Red No. 228, Orange No. 203, Orange No. 204, Blue No. 404, and Yellow No. 401; Red No. 3, Red No. 104, Red No. 106, Orange No. 205, Yellow No. 4, Yellow No. 5, and Green No. 3. Examples of suitable pigments include organic pigment powders such as zirconium, barium, or aluminum lakes, such as Blue No. 1 and Blue No. 1, as well as metal powders such as aluminum powder, gold powder, and silver powder; composite powders such as titanium dioxide-coated mica titanium, zinc oxide-coated mica titanium, barium sulfate-coated mica titanium, titanium dioxide, silicon dioxide, and zinc oxide / silicon dioxide; and glittering agents such as polyethylene terephthalate-aluminum-epoxy laminated powder, polyethylene terephthalate-polyolefin laminated film powder, and polyethylene terephthalate-polymethyl methacrylate laminated film powder. These powders can be used singly or in combination, or in combination. These powders may also be surface-treated with one or more of fluorine-based compounds, silicone-based compounds, metal soaps, lecithin, hydrogenated lecithin, collagen, hydrocarbons, higher fatty acids, higher alcohols, esters, waxes, surfactants, etc. Pearlizing agents are considered coloring ingredients.

[0034] When the solid powder cosmetic contains a coloring component, the content thereof may be the amount necessary to color the cosmetic and may vary depending on the product form. For example, when the total mass of the solid powder cosmetic is taken as 100%, the content thereof may be 0.1 to 60% by mass, and preferably 5 to 40% by mass.

[0035] (F) Other ingredients The powder cosmetic according to this embodiment may or may not contain other components that do not fall under components (A) to (E), provided that their properties are not impaired. The other components may be, for example, liquid, solid, or oil-phase components other than components (B) and (D) (hereinafter referred to as "other oil-phase components"). Examples of other oil-phase components include oil-phase components that do not fall under either component (B) or (D) and that can be generally incorporated into cosmetics. Specific examples include, but are not limited to, natural animal- or plant-derived oils or semi-synthetic oils, ester oils that do not fall under components (B) or (D), hydrocarbon oils, and higher alcohols. In particular, liquid oils that do not fall under component (B) may be optionally included for purposes such as improving compatibility, pigment dispersibility, and improving texture. Examples of liquid oils that do not fall under component (B) include, but are not limited to, synthetic ester oils selected from hexyl laurate, isopropyl myristate, trimethylolpropane triisostearate, pentaerythrityl tetraisostearate, diisobutyl adipate, isodecyl neopentanoate, ethylhexyl isononanoate, diisostearyl malate, and polyglyceryl-2 triisostearate. The viscosity and content of liquid oils that do not fall under component (B) can be as described above.

[0036] The components other than the oil phase components may be other components commonly used in cosmetics, quasi-drugs, pharmaceutical compositions, etc. Specific examples include water, dyes, water-soluble polymer compounds, fragrances, surfactants, film-forming agents, additives, oil-soluble gelling agents, resins, antibacterial agents, preservatives, antioxidants, pH adjusters, moisturizers, alcohols such as polyhydric alcohols and lower alcohols, sugars, UV absorbers, whitening agents, skin activators, blood circulation promoters, antiseborrheic agents, anti-inflammatory agents, astringents, and cooling agents. It is possible to include emulsion compositions such as water-in-oil emulsion compositions and oil-in-water emulsion compositions, but it is preferable to incorporate each of these in an amount that does not impair the properties of the cosmetic of the present invention.

[0037] In one embodiment, it is preferable that the solid powder cosmetic is substantially free of silicone-based powder and substantially free of silicone oil. "Substantially free of silicone-based powder or silicone oil" means that the content of silicone-based powder or silicone oil is less than 0.1% by mass, assuming the total mass of the solid powder cosmetic to be 100%. Silicone is difficult to decompose in the natural environment, and from an environmental perspective, it is preferable not to contain silicone. "Powder containing silicone as the primary component" refers to powder with a silicone content of 50% by mass or more. Powders that have been surface-treated with silicone typically have a silicone content of approximately 12% by mass or less, and therefore do not fall under the category of "powder containing silicone as the primary component." Specific examples of silicone components that are preferably not included in solid powder cosmetics include, but are not limited to, dimethicone, phenyl trimethicone, cyclopentasiloxane, diphenyl dimethicone, diphenylsiloxyphenyl trimethicone, PCA dimethicone, (dimethicone / vinyl dimethicone) crosspolymer, (vinyl dimethicone / methicone silsesquioxane) crosspolymer, (diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane) crosspolymer, methyl trimethicone, lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone, PEG-3 dimethicone, PEG-10 dimethicone, PEG-12 dimethicone, PEG-9 polydimethylsiloxyethyl dimethicone, PEG-11 methyl ether dimethicone, (bisisobutyl PEG / PPG-10 / 7 / dimethicone) copolymer, and the like. The partially crosslinked organopolysiloxane described above as an example of the microplastic beads also applies to the silicone powder.

[0038] The solid powder cosmetic according to this embodiment can be produced by a conventional dry molding method, which includes the steps of mixing components (A) and (B), and optionally one or more of components (C), (D), (E), and (F), filling the mixture into a container such as a metal dish, and pressure-molding the filled mixture.

[0039] In the mixing step, powder components containing component (A) and, optionally, component (C) and / or (E) are pulverized at room temperature using a conventional pulverizer or the like, followed by the addition of component (B) and, optionally, component (D) and an oil phase component and a preservative, and all components can be mixed using a conventional stirrer or the like. When optionally blending component (D) or a surfactant, it is preferable to add the component (D) and component (B) thoroughly while heating to 120°C or below, for example, 60 to 80°C, as needed. After mixing, the components may optionally be further pulverized using a pulverizer. The mixed composition can be pulverized using a pulverizer such as a hammer mill. Next, in the filling step, the bulk cosmetic obtained by mixing and pulverization is filled into a container such as a metal plate according to a typical dry molding method. In the pressure molding step, the mixture filled into the container is molded by pressure using a mold or the like to obtain a solid powder cosmetic. Depending on the shape of the mold used, it is also possible to apply a design to the surface of the solid powder cosmetic.

[0040] The solid powder cosmetic according to the present embodiment may be in the form of a makeup cosmetic, a cosmetic, or a topical skin preparation, including, but not limited to, a powdery foundation, pressed powder, pressed eye shadow, pressed cheek color, pressed highlighter, pressed eyebrow pencil, and powder lipstick. [Example]

[0041] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples.

[0042] The solid powder cosmetics according to the Examples and Comparative Examples were manufactured as follows. Of the ingredients in Tables 2 to 5, the powder ingredients were pulverized and mixed using an atomizer, and the oil phase ingredients were added and mixed using a Henschel mixer. The resulting mixture was then pulverized using a grinder. It was then passed through a sieve and pressed into a metal dish. The process was generally carried out at room temperature, but when component (D) was added, the oil phase was heated to 60°C while mixing.

[0043] The produced solid powder cosmetics were evaluated as follows: The viscosity of component (B) and liquid oils not corresponding to component (B) was measured using a Toki Sangyo B-type viscometer "TV-type viscometer TVB-10M" at a measurement temperature of 25°C, using an M1 rotor, at a rotation speed of 30 rpm (revolutions per minute), and for a rotation time of 60 seconds.

[0044] (shock resistance) Impact resistance was evaluated by a drop test. The test involved filling a metal dish with a solid powder cosmetic, which had been compression-molded, and dropping it naked without being placed in a container such as a compact. The number of times the solid powder cosmetic passed a normal drop of 30 cm was evaluated as the average of n=2. The number of times the solid powder cosmetic passed the drop was the number of times the solid powder cosmetic did not chip after being dropped. Note that even if cracks occurred, the product was considered to have passed if no chipping occurred. The evaluation criteria were as follows: 5 or more times passed was ⊚, 2 to 5 times passed was △, and less than 2 times passed was ×.

[0045] (Softness) The softness was measured at five points on the surface of a solid powder cosmetic that had been filled into a metal dish and compressed using an Olsen hardness tester (Ueshima Seisakusho Co., Ltd.) under a load of 1 pound, and the average value was calculated. The evaluation criteria were as follows: an average value of 28 or more was ◎, an average value of 25 to less than 28 was △, and an average value of less than 25 was ×.

[0046] (Scattered) A sensory evaluation was performed to determine the degree of powder scattering. The pressed surface of a solid powder cosmetic that had been filled into a metal dish and compressed was rubbed clockwise with a finger three times with the same force as that used during normal use (normal force), and the degree of powder scattering was visually confirmed (n=3). The evaluation criteria were as follows: ◎ if there was very little powder scattering, △ if there was a little amount of powder scattering, and × if there was a lot of powder scattering.

[0047] (Color development) The color development was evaluated by sensory evaluation, and the appearance color and the applied color were visually confirmed. The application was evaluated by rubbing the solid powder cosmetic with a finger and applying it once to the skin (n=3). The evaluation criteria were as follows: ◎: the appearance color was uniform and there was no difference between the appearance color and the applied color; ○: the appearance color was uniform and the applied color was slightly lighter than the appearance color; △: the appearance color was uniform and the applied color was slightly lighter than the appearance color; and ×: the appearance color was sparse or the applied color was significantly lighter than the appearance color.

[0048] Commercially available mica was obtained and its loose bulk density was measured. The product name of the mica, the source of the mica (name of the manufacturer / distributor), and the measurement results of the loose bulk density are shown in Table 1 below. The loose bulk density was measured in accordance with "Japanese Industrial Standard JIS K5101-12-1, Pigment Test Methods, Part 12: Apparent Density or Apparent Specific Volume, Section 1: Static Method." In the tables of Examples, Comparative Examples, and Formulation Examples below, the mica used is represented by the symbols in Table 1. [Table 1]

[0049] The compositions and evaluation results of the cosmetics of the Examples and Comparative Examples are shown in Tables 2 to 5. In the tables, "-" indicates that the component in question was not contained in the cosmetic (0%) or that the evaluation results could not be calculated. [Table 2]

[0050] [Table 3] In Table 3, Comparative Example 6 and Examples 16 and 17 contained a liquid oil that does not fall under component (B) (hexyl laurate and / or dipentaerythritol tetraisostearate), and the item "Viscosity of liquid oil phase" indicated the viscosity of the liquid oil phase, which was a mixture of component (B) and all liquid oil components including liquid oils that do not fall under component (B).

[0051] [Table 4]

[0052] [Table 5]

[0053] Next, examples of formulations for solid powder cosmetics are shown. In each formulation example, the number to the right of the ingredient indicates the mass % when the mass of the entire cosmetic is taken as 100%.

[0054] [Formulation example 1] Eye shadow (1) Mica A (component (A)) 35.0 (2) Zinc myristate [ingredient (C)] 5.0 (3) Spherical silica 3.0 (4) Cellulose 5.0 (5) Iron oxide 10.1 (6) Mica H remaining amount (7) Octyldodecanol (viscosity: 50 mPa·s) [Component (B)] 5.0 (8) Dipentaerythritol hexa(hydroxystearic acid / stearic acid / rosin acid) [ingredient (D)] 2.5 (9) Preservatives (appropriate amount) Manufacturing method: (1) to (6) were pulverized and mixed in a pulverizer such as an atomizer, and (7) to (9) were added and mixed in a Henschel mixer. The resulting mixture was then pulverized in a pulverizer. It was then passed through a sieve and pressed into a metal dish. The resulting cosmetic product was excellent in all aspects of impact resistance, softness, powdering, and color development, and was found to have equivalent effects to the eye shadow of Example 1.

[0055] [Formulation Example 2] Eyeshadow (1) Mica M [Component (A)] 25.0 (2) Zinc stearate [ingredient (C)] 5.0 (3) Saccharomyces culture 2.7 (4) Lauroyl Lysine 0.3 (5) Cellulose 4.0 (6) Pearlizing agent 10.0 (7) Iron oxide 10.1 (8) Mica H remaining amount (9) Hexyldecyl isostearate (viscosity: 30 mPa·s) [component (B)] 5.0 (10) Macadamia nut fatty acid phytosteryl [ingredient (D)] 2.45 (11) Tocopherol 0.02 (12) Preservatives (appropriate amount) Manufacturing method: (1) to (8) were pulverized and mixed using a pulverizer such as an atomizer, and (9) to (12) were added, but the process was the same as in Formulation Example 1. The obtained cosmetic was excellent in all aspects of impact resistance, softness, powdering, and color development, and was found to have the same effect as the eye shadow of Formulation Example 1.

[0056] [Formulation example 3] Cheek (1) Mica F [component (A)] 30.0 (2) Zinc laurate [ingredient (C)] 5.0 (3) Spherical silica 8.0 (4) Pearlizing agent 18.0 (5) Iron oxide 1.2 (6) Red 226 0.3 (7) Mica I remaining amount (8) Octyldodecanol (viscosity: 50 mPa·s) [component (B)] 6.5 (9) Dipentaerythritol hexa(hydroxystearic acid / stearic acid / rosin acid) [ingredient (D)] 3.0 (10) Preservatives (appropriate amount) Manufacturing method: (1) to (7) were pulverized and mixed using a pulverizer such as an atomizer, and (8) to (10) were added, but the process was the same as in Formulation Example 1. The obtained cosmetic was excellent in all aspects of impact resistance, softness, powdering, and color development, and was found to have the same effect as the eye shadow of Formulation Example 1.

[0057] [Prescription Example 4] Highlight (1) Mica A [Component (A)] 26.0 (2) Zinc laurate [ingredient (C)] 8.0 (3) Spherical silica 8.0 (4) Pearlizing agent 28.0 (5) Iron oxide 0.4 (6) Gunjo 0.6 (7) Bismuth oxychloride remaining amount (8) Octyldodecanol (viscosity: 50 mPa·s) [component (B)] 6.5 (9) Dipentaerythritol hexa(hydroxystearic acid / stearic acid / rosin acid) [ingredient (D)] 3.0 (10) Preservatives (appropriate amount) Manufacturing method: (1) to (7) were pulverized and mixed using a pulverizer such as an atomizer, and (8) to (10) were added, but the process was the same as in Formulation Example 1. The obtained cosmetic was excellent in all aspects of impact resistance, softness, powdering, and color development, and was found to have the same effect as the eye shadow of Formulation Example 1.

[0058] [Formulation example 5] Powdery foundation (1) Mica A [Component (A)] 25.0 (2) Zinc laurate [ingredient (C)] 5.0 (3) Spherical silica 13.0 (4) Titanium dioxide 10.0 (5) Iron oxide 2.3 (6) Mica H remaining amount (7) Octyldodecanol (viscosity: 50 mPa·s) [component (B)] 5.0 (8) Dipentaerythritol hexa(hydroxystearic acid / stearic acid / rosin acid) [ingredient (D)] 2.5 (9) Preservatives (appropriate amount) Manufacturing method: (1) to (6) were pulverized and mixed using a pulverizer such as an atomizer, and (7) to (9) were added, but the process was the same as in Formulation Example 1. The obtained cosmetic was excellent in all aspects of impact resistance, softness, powdering, and color development, and was found to have the same effect as the eye shadow of Formulation Example 1.

Claims

1. (A) 10% by mass or more and 50% by mass or less of mica having a loose bulk density of 0.11 g / ml or more and less than 0.21 g / ml; (B) 3% by mass or more and 15% by mass or less of a liquid oil having a viscosity of 10 mPa·s or more and 150 mPa·s or less; (C) Metal soap powder: 40% by mass or less wherein the viscosity of the liquid oil phase containing component (B) is 10 mPa·s or more and 150 mPa·s or less, and the dry-molded solid powder cosmetic preparation is substantially free of talc and substantially free of plastic microbeads.

2. 2. The solid powder cosmetic according to claim 1, comprising 0.1% by mass or more and 40% by mass or less of said component (C).

3. 2. The solid powder cosmetic according to claim 1, further comprising (D) a paste oil in an amount of 1% by mass or more and 7.5% by mass or less.

4. Further, (D) paste oil is contained in an amount of 0 mass% or more and 7.5 mass% or less, 4. The powder cosmetic according to claim 3, wherein the total mass of components (B) and (D) is 15% by mass or less, and the blending amount of component (D) is 50% by mass or less of the blending amount of component (B).

5. 2. The solid powder cosmetic according to claim 1, which is substantially free of powders whose main component is silicone and substantially free of silicone oil.

Images